Home / 5,521.30-7,619.60-3,163.90

Finding the Fourth Proportional to 5,521.30, 7,619.60 and 3,163.90

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Solution

The fourth proportional to 5,521.30, 7,619.60 and 3,163.90 is: 4,366.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.30 : 7,619.60 = 3,163.90 : x
  2. Step 2: Convert to fraction form
    5,521.30/7,619.60 = 3,163.90/x
  3. Step 3: Cross multiply
    5,521.30x = 7,619.60 × 3,163.90
  4. Step 4: Simplify right side
    5,521.30x = 24,107,643.72
  5. Step 5: Solve for x
    x = 24,107,643.72/5,521.30
  6. Step 6: Final answer
    x = 4,366.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.